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Reliably printing the contents of an array that contains spaces and newlines first in a portable syntax, and then the same thing in Bash. Note that in Bash, the number of spaces before the newline is made clear.
If IFS is unset, or its value is exactly <space><tab><newline>, the default, then sequences of <space>, <tab>, and <newline> at the beginning and end of the results of the previous expansions are ignored, and any sequence of IFS characters not at the beginning or end serves to delimit words.
The term is also used more generally to mean the automated mode of running an operating system shell; each operating system uses a particular name for these functions including batch files (MSDos-Win95 stream, OS/2), command procedures (VMS), and shell scripts (Windows NT stream and third-party derivatives like 4NT—article is at cmd.exe), and ...
Traditionally, the Bourne shell program name is sh and its path in the Unix file system hierarchy is /bin/sh. But a number of compatible work-alikes are also available with various improvements and additional features. On many systems, sh may be a symbolic link or hard link to one of these alternatives:
newline terminated semicolon R: newline terminated [4] semicolon [4] Raku: semicolon separated Red: whitespace separated Ruby: newline terminated semicolon Rust: semicolon terminated comma separates expressions Scala: newline terminated (semicolon optional) semicolon Seed7: semicolon separated (semicolon termination is allowed) Simula ...
This functions similarly to Bash's Ctrl+R history search, but is always on, giving the user continuous feedback while typing commands. Fish also includes feature-rich tab completion , with support for expanding file paths (with wildcards and brace expansion ), environment variables , and command-specific completions.
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Name Description Unix Plan 9 Inferno FreeBSD Linux MSX-DOS IBM i-b,--ignore-leading-blanks: Ignores leading blanks. Yes Yes No Yes Yes No Yes -c: Check that input file is sorted. No Yes No Yes Yes No Yes -C: Like -c, but does not report the first bad line. No No No Yes Yes No No -d,--dictionary-order: Considers only blanks and alphanumeric ...